papers/lux-governance-dao/sections/05-on-chain-voting-implementation.tex

\section{On-Chain Voting Implementation}


\subsection{Governance Smart Contract}

\begin{lstlisting}[language=Solidity,caption=Core governance contract interface]
// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.20;

interface ILuxGovernance {
    struct Proposal {
        uint256 id;
        address proposer;
        string ipfsHash;           // LP document on IPFS
        ProposalType proposalType;
        uint256 startBlock;
        uint256 endBlock;
        uint256 forVotes;
        uint256 againstVotes;
        uint256 abstainVotes;
        bool executed;
        mapping(address => Vote) votes;
    }

    enum ProposalType {
        Standard,    // Simple majority
        Protocol,    // Supermajority + validators
        Economic,    // Weighted voting
        Emergency    // Fast-track
    }

    enum Vote { None, For, Against, Abstain }

    // Create new proposal
    function propose(
        string calldata ipfsHash,
        ProposalType pType,
        bytes calldata data
    ) external returns (uint256 proposalId);

    // Cast vote with token weight
    function castVote(
        uint256 proposalId,
        Vote vote
    ) external;

    // Validators cast enhanced vote
    function castValidatorVote(
        uint256 proposalId,
        Vote vote,
        bytes calldata validatorProof
    ) external;

    // Execute approved proposal
    function execute(uint256 proposalId) external;

    // Query proposal status
    function getProposal(uint256 proposalId)
        external view returns (Proposal memory);
}
\end{lstlisting}

\subsection{Voting Power Calculation}

\begin{lstlisting}[language=Solidity,caption=Voting power calculation with reputation]
contract VotingPower {
    // Base voting power from staked tokens
    function calculateBaseVotingPower(address voter)
        public view returns (uint256)
    {
        return stakingContract.balanceOf(voter);
    }

    // Reputation multiplier (0-50% boost)
    function calculateReputation(address voter)
        public view returns (uint256)
    {
        uint256 participationCount =
            governanceHistory.getParticipationCount(voter);
        uint256 proposalQuality =
            governanceHistory.getProposalQuality(voter);

        // Reputation = 0.3 * participation + 0.2 * quality
        // Max reputation: 0.5 (50% boost)
        uint256 reputation =
            (participationCount * 300 / 1000) +
            (proposalQuality * 200 / 1000);

        return min(reputation, 500); // Cap at 50%
    }

    // Final voting power
    function getVotingPower(address voter)
        public view returns (uint256)
    {
        uint256 base = calculateBaseVotingPower(voter);
        uint256 reputation = calculateReputation(voter);

        // VP = base * (1 + reputation)
        return base * (1000 + reputation) / 1000;
    }
}
\end{lstlisting}

\subsection{Quantum-Secure Vote Aggregation}

Votes are secured using dual-certificate signatures (BLS + Pulsar):

\begin{lstlisting}[language=Solidity,caption=Quantum-secure vote verification]
contract QuantumSecureVoting {
    struct DualSignature {
        bytes blsSignature;      // 48 bytes
        bytes coronaSignature; // ~2.5KB
    }

    function verifyVote(
        address voter,
        uint256 proposalId,
        Vote vote,
        DualSignature calldata sig
    ) public view returns (bool) {
        bytes32 message = keccak256(abi.encodePacked(
            voter, proposalId, vote
        ));

        // Verify both signatures (classical + quantum-safe)
        bool blsValid = verifyBLS(
            voter, message, sig.blsSignature
        );
        bool coronaValid = verifyCorona(
            voter, message, sig.coronaSignature
        );

        return blsValid && coronaValid;
    }

    // BLS signature aggregation for efficiency
    function aggregateVotes(
        DualSignature[] calldata signatures
    ) public pure returns (bytes memory aggregatedBLS) {
        // BLS signatures can be aggregated O(1)
        return bls.aggregate(extractBLS(signatures));
    }
}
\end{lstlisting}